CN207317905U - Flowmeter calibrating installation - Google Patents
Flowmeter calibrating installation Download PDFInfo
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- CN207317905U CN207317905U CN201721420724.7U CN201721420724U CN207317905U CN 207317905 U CN207317905 U CN 207317905U CN 201721420724 U CN201721420724 U CN 201721420724U CN 207317905 U CN207317905 U CN 207317905U
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Abstract
The utility model provides flowmeter calibrating installation, including：One the oneth NI communicators (10), one the 2nd NI communicators (11), a server (13), a main line (19) and the water-storing device (1) being sequentially arranged on main line (19), a water pump (2), a DN50 standard scales pipeline (18), tested flowmeter (4) can be installed on main line (19)；The water intake end of main line (19) is connected to the water outlet end of water-storing device (1), and the backwater end of main line (19) is connected to the water inlet end of water-storing device (1)；First NI communicators (10) are electrically connected with water pump (2)；DN50 standard scales pipeline (18) includes at least one proving flowmeter (3), and at least one proving flowmeter (3) is DN50 proving flowmeters.
Description
Technical field
The collimation technique field of flowmeter is the utility model is related to, in particular to the flowmeter suitable for small flow velocity
Calibrating installation.
Background technology
As user is higher and higher to product quality, technology controlling and process, production procedure and the requirement of cost control, to entering
The requirement of the precision, performance of the flowmeter product of every field is also higher and higher.How to establish high accuracy, high reliability, efficiently
The flowrate calibrating device of rate, has become the important ring in traffic alignment work.
At present, traffic alignment mainly uses following several method in correlation technique：Volumetric method, weight method and proving flowmeter
Method.
Volumetric method and weight method are widely used in enterprise, but its there are efficiency is low, time of measuring is long, maintenance maintenance is stranded
It is difficult, be easily disturbed, narrow application range, it is of high cost the problems such as.Moreover, with the increase of line size, cost is doubled and redoubled, because
This, volumetric method and weight method have been increasingly difficult to meet the needs of enterprise.
Proving flowmeter method is fluid is continued through mark in same time interval as mete-wand using flowmeter
Quasi- flowmeter and tested flowmeter, the metering performance of tested flowmeter is determined by comparing both output flow values.Due to
The proving flowmeter method scope of application is wide, strong antijamming capability, efficient and reliability are high, has obtained recognizing for more and more users
Can.
But in correlation technique, when the flow velocity of liquid is small flow velocity, it is unstable that flowmeter calibrating installation still has calibration
The problem of.
Utility model content
The utility model embodiment provides flowmeter calibrating installation, is calibrated with least solving small flow velocity in correlation technique
Present in stability it is poor the problem of.
One according to the present utility model embodiment there is provided flowmeter calibrating installation, including：One the oneth NI communication dresses
Put, one the 2nd NI communicators, a server, a main line and the water-storing device being sequentially arranged on main line, a water
Pump, a DN50 standard scale pipelines, tested flowmeter can be installed on main line；Wherein, the water intake end of main line is connected to
The water outlet end of water-storing device, the backwater end of main line are connected to the water inlet end of water-storing device；First NI communicators and water
Pump is electrically connected, and supervisor is flowed into from the water outlet end of water-storing device to adjust the liquid being stored in water-storing device for controlling water pump
The flow velocity on road；DN50 standard scales pipeline includes at least one proving flowmeter, and at least one normal flow is calculated as DN50 normal streams
Gauge, in the case of being 4 to 40 cubes ms/h in flow velocity, detection flows through the flow velocity of the liquid of DN50 standard scale pipelines
Signal；2nd NI communicators are electrically connected with least one proving flowmeter, are flowed for being gathered from least one proving flowmeter
Fast signal；And server is electrically connected with the 2nd NI communicators, for calibrating tested flowmeter according to flow velocity signal.
By said structure, solve the problems, such as unstability present in small flow velocity calibration in correlation technique, have and carry
The beneficial effect of the stability of high small flow velocity calibration.
In a schematical embodiment of flowmeter calibrating installation, DN50 standard scale pipelines, which further include, to be installed in series
Two butterfly valves at the both ends of at least one proving flowmeter, for enabling or closing DN50 standard scale pipelines.
By said structure, in DN50 standard scale pipelines, two butterfly valves are installed in series at proving flowmeter both ends, can
Whether to there is liquid to flow through to control in the proving flowmeter in DN50 standard scale pipelines by butterfly valve, so as in liquid flow
In the case that speed is higher, avoid calibrating tested flowmeter using DN50 standard scales pipeline by closing butterfly valve；Can also be
In the case that flow rate of liquid is relatively low, by opened butterfly valve, i.e., the flowmeter using DN50 standard scale pipelines is stable, accurately measures
The flow velocity signal of small flow velocity, so as to improve the stability of small flow velocity calibration.
In a schematical embodiment of flowmeter calibrating installation, further include：3rd NI communicators, with butterfly valve
It is electrically connected, in the case of being 4 to 40 cubes ms/h in flow velocity, control butterfly valve enables DN50 standard scales pipeline so that liquid
Body flows through DN50 standard scale pipelines, and otherwise, control butterfly valve closes DN50 standard scales pipeline and flows through DN50 standard scales to avoid liquid
Pipeline.
By said structure, the 3rd NI communicators are electrically connected with butterfly valve, can be controlled by the 3rd NI communicators
The open and close of butterfly valve processed, so as to control the open and close of butterfly valve according to the flow velocity of liquid, and then control liquid
Whether can be by DN50 standard scale pipelines, that is, determining to be used for calibrate by control of the 3rd NI communicators to butterfly valve
Whether the test line of tested flowmeter is DN50 standard scale pipelines.
In a schematical embodiment of flowmeter calibrating installation, at least one proving flowmeter includes two strings
Join the proving flowmeter of installation, each proving flowmeter exports flow velocity signal respectively；And server is installed in series two
The flow velocity signal that exports respectively of proving flowmeter average, and flowmeter is detected according to the average value calibration of flow velocity signal.
For usual flowmeter calibrating installation only with a proving flowmeter, this causes calibration result to be too dependent on single mark
The testing result of quasi- flowmeter, if the proving flowmeter will cause calibration error larger there are problem.In the application flow
In the schematical embodiment of meter calibrating device, employ more than two proving flowmeters, and to its testing result into
Row averages and is converted into the processing of flow, so as to improve the accuracy of calibration table detection.
In a schematical embodiment of flowmeter calibrating installation, at least one DN200 standard scale pipes are further included
Line, at least one DN200 standard scales pipeline and DN50 standard scale pipelines are connected on main line after being connected in parallel, for
In the case that flow velocity is more than 40 cubes ms/h, detection flows through being averaged for the flow velocity signal of at least one DN200 standard scale pipelines
Value is detected flowmeter for calibrating.
By said structure, by being connected on after DN200 standard scales pipeline is connected in parallel with DN50 standard scale pipelines
On main line, the flow path of liquid can be controlled by switching respective line exits and entrances valve under different liquids flow velocity, so that
Use different standard scale pipeline surveys liquid different in flow rate.
In a schematical embodiment of flowmeter calibrating installation, flowmeter calibrating installation further includes a control
Valve, is installed in series on main line, and between the water inlet end of water-storing device and tested flowmeter, and communicate with the first NI
Device is electrically connected, and control valve is used for the fluid pressure that main line is adjusted under the control of the first NI communicators.
By said structure, between the water inlet end of water-storing device and tested flowmeter, control valve is installed in series
On main line, and being electrically connected for the control valve and the first NI communicators is established, can be by the first NI communicators to the control
Valve processed is controlled, so as to adjust the fluid pressure of main line, and then is controlled the flow rate of liquid in main line, is made in main line
Fluid pressure or flow velocity can control effectively according to actual use demand, avoid pressure excessive or it is too small influence water stream
State.
In a schematical embodiment of flowmeter calibrating installation, main line includes entering water positioned at water-storing device
Water return pipeline between mouth end and control valve；Flowmeter calibrating installation further includes standard scale calibrating installation, be connected to control valve and
Between water-storing device, and it is in parallel with water return pipeline, for calibrating at least one proving flowmeter according to weight method.
By said structure, standard scale calibrating installation is accessed between control valve and water-storing device, can be according to weight method
To calibrate proving flowmeter, proving flowmeter is accurately measured flow, in addition, by said structure, pass through water inlet
Hold the water return pipeline between control valve, make in flowmeter calibrating installation there are a set of closed circuit, so that liquid can be
Flowed in the closed circuit, complete the flow circuit of liquid；Standard scale calibrating installation is in parallel with water return pipeline, it can use
Weight method in the case of calibrating proving flowmeter, can form close ring using standard scale calibrating installation instead of water return pipeline
Road, completes the flow circuit of liquid.
In a schematical embodiment of flowmeter calibrating installation, standard scale calibrating installation includes gravimetric tank, uses
In at least one proving flowmeter of mass calibration according to the liquid for flowing into gravimetric tank.
By said structure, the liquid quality of inflow can be measured come school according to the gravimetric tank in standard scale calibrating installation
Accurate at least one proving flowmeter, so that proving flowmeter can accurately measure flow.
In a schematical embodiment of flowmeter calibrating installation, standard scale calibrating installation further includes steering gear,
Installed in the water inlet of gravimetric tank, for whether controlling liquid via gravimetric tank inflow water-storing device.
By said structure, steering gear is installed on to the water inlet of gravimetric tank, liquid can be controlled by steering gear
The start and stop of gravimetric tank are flowed through, by the contrast between the water flow that flows into the water of gravimetric tank and flow through proving flowmeter, are completed pair
The calibration of proving flowmeter.
In a schematical embodiment of flowmeter calibrating installation, two conversion valves are further included, are installed respectively
It is electrically connected in the water inlet of water return pipeline and gravimetric tank, and with the first NI communicators, in the first NI communicators
The switching of the flow direction of liquid is carried out under control between standard scale calibrating installation and water return pipeline.
By said structure, two conversion valves are separately mounted to the water inlet of water return pipeline and gravimetric tank, and are incited somebody to action
Two conversion valves are established with the first NI communicators to be electrically connected, and can pass through control of the first NI communicators to conversion valve
To realize the selection for flowing into liquid water return pipeline and gravimetric tank, allow the liquid to be calibrated in standard scale according to actual use demand
The switching of liquid flow direction is carried out between device and water return pipeline, i.e., between the tested flowmeter of calibration and calibration proving flowmeter into
Row switching.
By the utility model, since the bore that DN50 standard scales pipeline includes at least one proving flowmeter is 50 millis
Rice, so in the case where flow velocity is 4 to 40 cubes ms/h, detection flows through the fluid flow of DN50 standard scale pipelines.Cause
This, the utility model solves the problems, such as unstable present in the calibration of small flow velocity in the prior art, has and improves small flow velocity school
The beneficial effect of accurate stability.
Brief description of the drawings
Attached drawing described herein is used to provide a further understanding of the present invention, and forms one of the utility model
Point, the exemplary embodiment and its explanation of the utility model are used to explain the utility model, do not form to the utility model
Improper restriction.In the accompanying drawings：
Fig. 1 is the structure diagram according to the flowmeter calibrating installation of the utility model embodiment.
Reference symbol table is as follows：1st, water-storing device；2nd, water pump；3rd, proving flowmeter；4th, it is detected flowmeter；5th, control valve；
6th, steering gear；7th, gravimetric tank；8th, drain valve；9 and 9 ', conversion valve；10th, the first NI communicators, the 11, the 2nd NI communication dresses
Put；12nd, the 3rd NI communicators；13rd, server；14th, DN200 standard scales pipeline；15 and 16, butterfly valve；17th, standard scale calibration cartridge
Put；18th, DN50 standard scales pipeline；19th, main line；21st, water return pipeline.
Embodiment
Describe the utility model in detail below with reference to attached drawing and in conjunction with the embodiments.It should be noted that do not rushing
In the case of prominent, the feature in embodiment and embodiment in the utility model can be mutually combined.
It should be noted that term " first " in the specification and claims of the utility model and above-mentioned attached drawing,
" second " etc. is for distinguishing similar object, without for describing specific order or precedence.
In an illustrative embodiments of the utility model, there is provided flowmeter calibrating installation.
Fig. 1 is the structure diagram of the flowmeter calibrating installation of illustrative embodiments according to the present utility model, such as Fig. 1
It is shown, including：One the oneth NI communicators 10, one the 2nd NI communicators 11, a server 13, a main line 19, Yi Jiyi
A secondary water-storing device 1, a water pump 2, a DN50 standard scales pipeline 18 on the main line 19, being detected flowmeter 4 can be by
On main line 19；Wherein, the water intake end of main line 19 is connected to the water outlet end of water-storing device 1, and main line 19 returns
Water end (W.E.) is connected to the water inlet end of water-storing device 1；First NI communicators 10 are electrically connected with water pump 2, for controlling water pump 2 with tune
The liquid that section is stored in water-storing device 1 flows into the flow velocity of main line 19 from the water outlet end of water-storing device 1；DN50 standard scale pipes
Line 18 includes at least one proving flowmeter 3, and at least one proving flowmeter 3 is DN50 proving flowmeters, for being 4 in flow velocity
In the case of 40 cubes ms/h, detection flows through the flow velocity signal of the liquid of DN50 standard scales pipeline 18；2nd NI communication dresses
Put 11 to be electrically connected with least one proving flowmeter 3, for gathering flow velocity signal from least one proving flowmeter 3；And clothes
Business device 13 is electrically connected with the 2nd NI communicators 11, and the traffic alignment for being calculated according to flow velocity signal is detected flowmeter 4.
In above-mentioned flowmeter calibrating installation, including main line 19, water-storing device 1 and DN50 standard scales pipeline 18, its
In, the water intake end of main line 19 is connected to the water outlet end of water-storing device 1, and the backwater end of main line 19 is connected to water-storing device 1
Water inlet end, by the water pump 2 connected on main line 19, the liquid being stored in water-storing device 1 can be adjusted and filled from water storage
The water outlet end for putting 1 flows into the flow velocity of main line 19, also, in the case where flow rate of liquid is 4 to 40 cubes ms/h, makes
Liquid can be by the proving flowmeter 3 in DN50 standard scales pipeline 18 come accurately measuring liquid flows through DN50 standard scales pipeline 18
Caused flow velocity, so that the flow velocity that the tested flowmeter 4 on main line 19 can be measured according to proving flowmeter 3 carries out school
Standard, and then can stablize, accurately measure the flow velocity signal of small flow velocity, solve in correlation technique present in small flow velocity calibration
The problem of unstability, have the beneficial effect for the stability for improving small flow velocity calibration.
In an exemplary embodiment, the first NI communicators 10 are electrically connected with water pump 2, the first NI can be passed through
10 automatically controlled water pump 2 of communicator, and then automatically adjust and be stored in water outlet of the liquid in water-storing device 1 from water-storing device 1
Mouth end flows into the flow velocity of main line 19.
In an exemplary embodiment, the first NI communicators 10 are established with server 13 and are electrically connected, and can be passed through
Server 13 controls the first NI communicators 10 to send the instruction for controlling flow rate of liquid to water pump 2.
In an exemplary embodiment, the 2nd NI communicators 11 are electrically connected with least one proving flowmeter 3, extremely
A few proving flowmeter 3 gathers the flow velocity signal for flowing through the liquid of its own, and electric current and the pulse that will represent flow velocity signal
Signal transmission gives the 2nd NI communicators 11, the second NI communicators 11 is obtained the electricity for representing flow velocity signal
Stream and pulse signal, and then the electric current that is obtained according to the 2nd NI communicators 11 of server 13 and pulse signal calculate flow velocity simultaneously
Accurate alignment is detected flowmeter 4.
In an exemplary embodiment, server 13 is used for error calculation and calibration etc..In general, by server 13
Only it is detected the step-by-step counting of flowmeter 4 and proving flowmeter 3.Under proving flowmeter pattern, synchronizing signal is not by any thing
Equipment triggering is managed, but is started by server 13.The enabling signal sent by server 13 is divided into two-way, is used to control mark all the way
The pulse counter start-stop of quasi- flowmeter 3；Another way is used for the step-by-step counting start-stop for controlling tested flowmeter 4.
In an exemplary embodiment, server 13 is by application software come integrated management.One of the system is main
Function is the support by database, realization and the intelligence communication between proving flowmeter 3 and tested flowmeter 4, so that according to
The characteristics of different technologies, various sizes of flowmeter and proving flowmeter, neatly lower set optimal mistake automatically different in flow rate
Journey parameter.
Specifically, the parameter of flowmeter of each type, the parameter of proving flowmeter 3 and not are stored with the database
The information such as corresponding each flow point with bore.When user is a flowmeter access system, system can recognize that the stream
The relevant information of gauge, is read using reading order and calibrates relevant parameter, or carries out configuration, and changes the flowmeter
Parameter, so as to complete calibration process.
In an exemplary embodiment, water pump 2 can be a frequency conversion speed adjusting pump.
In an exemplary embodiment, proving flowmeter 3 can be electromagnetic flowmeter (Electromagnetic
Flowmeter, abbreviation EMF), it is to apply electromagnetic induction principle, and that inducts when passing through externally-applied magnetic field according to conductor fluid is electronic
Gesture measures a kind of instrument of conductor fluid flow.Electromagnetic flowmeter includes magnetic circuit system, measurement conduit.Wherein, magnetic circuit system,
For producing the direct current or alternating current magnetic field that are evenly distributed in measurement conduit；Conduit is measured, for allowing tested conductive liquid to lead to
When crossing, and making the magnetic line of force that magnetic circuit system produces by measuring conduit, survey flux is split or short circuit.Liquid is flowing through normal stream
In the case of gauge 3, liquid is at the magnetic line of force that the measurement conduit internal cutting magnetic circuit system of proving flowmeter 3 generates is through transmitter
Reason display flows through the flow velocity of flowmeter.
In a schematical embodiment, DN50 standard scales pipeline 18, which further includes, to be installed in series at least one standard
Two butterfly valves 15,16 at the both ends of flowmeter 3, for enabling or closing DN50 standard scales pipeline 18.
According to the above embodiment, by the butterfly that in DN50 standard scales pipeline 18, is installed in series at 3 both ends of installation proving flowmeter
Whether valve 15,16, can have liquid to flow through by butterfly valve 15,16 to control in the proving flowmeter 3 in DN50 standards pipeline 18,
So as in the case where flow rate of liquid is higher, avoid using DN50 standard scales pipeline 18 by closing butterfly valve 15,16, together
When, one in DN200 standards pipeline 14 is enabled to measure the liquid of big flow velocity；Can also be in the relatively low situation of flow rate of liquid
Under, for example, in the case where flow velocity is 4 to 40 cubes ms/h of small flow velocity, by opened butterfly valve 15,16, i.e., using DN50
The proving flowmeter 3 of standard scale pipeline 18 is stablized, accurately measures the flow velocity signal of small flow velocity, so as to improve small flow velocity calibration
Stability.
In a schematical embodiment, flowmeter calibrating installation further includes：3rd NI communicators 12, with butterfly valve
15th, 16 it is electrically connected, in the case of being 4 to 40 cubes ms/h in flow velocity, control butterfly valve 15,16 enables DN50 standard scales
Pipeline 18 is to flow through DN50 standard scales pipeline 18, and otherwise, control butterfly valve 15,16 closes DN50 standard scales pipeline 18 to keep away
Exempt from liquid and flow through DN50 standard scales pipeline 18.
According to the above embodiment, the 3rd NI communicators 12 are electrically connected with butterfly valve 15,16, can be led to by the 3rd NI
T unit 12 controls the open and close of butterfly valve 15,16, i.e. by the 3rd NI communicators 12, can be according to the stream of liquid
Speed controls the open and close of butterfly valve 15,16, and then controls whether liquid can pass through DN50 standard scales pipeline 18.
In an exemplary embodiment, server 13 is electrically connected with the 3rd NI communicators 12, can pass through service
Device 13 issues an instruction to the 3rd NI communicators 12 open and close of control butterfly valve 15,16.
In a schematical embodiment, at least one proving flowmeter 3 includes two normal streams being installed in series
Gauge 3, each proving flowmeter 3 are respectively used to detection flow velocity signal；And server 13 is to two standards being installed in series
The flow velocity signal that flowmeter 3 detects respectively is averaged, and is detected flowmeter 4 according to the flow velocity signal calibration after average.
For usual flowmeter calibrating installation only with a proving flowmeter 3, it is single that this causes calibration result to be too dependent on
The testing result of proving flowmeter 3, if the proving flowmeter 3 will cause measuring error there are problem.And in the application stream
In the schematical embodiment of gauge calibrating installation, more than two proving flowmeters 3 are employed, and to its testing result
The processing averaged, so as to improve the accuracy of calibration table detection.
In a schematical embodiment, at least one DN200 standard scales pipeline 14 is further included, itself and DN50 standards
Table pipeline 18 is connected on main line 19 after being connected in parallel, in the case of being more than 40 cubes ms/h in flow velocity, detection
The flow velocity for flowing through at least one DN200 standard scales pipeline 14 is detected flowmeter 4 for calibrating.
According to the above embodiment, by the way that DN200 standard scales pipeline 14 and DN50 standard scales pipeline 18 are connected in parallel it
After be connected on main line 19, can flow rate of liquid be more than 40 cubes ms/h in the case of, liquid is marked by DN200
Quasi- table pipeline 14, so as to accurately measure the flow velocity signal of big flow velocity by DN200 standard scales pipeline 14；Also, pass through
The DN50 standard scale pipeline 18 in parallel with DN200 standard scales pipeline 14 is set, 40 cubes ms/h can be less than in flow rate of liquid
In the case of, avoid the liquid of small flow velocity from passing through from DN200 standard scales pipeline 14.
In a schematical embodiment, flowmeter calibrating installation further includes a control valve 5, is installed in series and is being responsible for
On road 19, and between the water inlet end of water-storing device 1 and tested flowmeter 4, and it is electrically connected with the first NI communicators 10,
Control valve 5 is used for the fluid pressure that main line 19 is adjusted under the control of the first NI communicators 10.
According to the above embodiment, between the water inlet end of water-storing device 1 and tested flowmeter 4, control valve 5 is connected
On main line 19, and being electrically connected for the control valve 5 and the first NI communicators 10 is established, can be communicated by the first NI
Device 10 is controlled the control valve 5, so as to adjust the fluid pressure of main line 19, and then controls master in phase with water pump 2
Flow rate of liquid in pipeline 19.In an exemplary embodiment of present embodiment, the first NI communicators 10 are used to control
The aperture of the control valve 5 is made, for example, in the case of the aperture increase of control valve 5, the fluid pressure in main line 19 reduces,
The flow velocity of liquid is accelerated in main line 19；In the case where the aperture of control valve 5 reduces, the fluid pressure in main line 19 increases
Greatly, in main line 19 liquid flows decrease.
In a schematical embodiment, main line 19 is included positioned at the water inlet end of water-storing device 1 and control valve 5
Between water return pipeline 21；Flowmeter calibrating installation further includes the standard scale calibrating installation 17 in parallel with the water return pipeline 21.Mark
Quasi- table calibrating installation 17 is connected between control valve 5 and water-storing device 1, for calibrating at least one normal flow according to weight method
Meter 3.
According to the above embodiment, standard scale calibrating installation 17 is accessed between control valve 5 and water-storing device 1, so as to
To calibrate proving flowmeter 3 according to weight method, proving flowmeter 3 is stablized, accurately measure the stream of small moving liquid
Fast signal, and then improve the stability of small flow velocity calibration.
In addition, according to the above embodiment, pass through the water return pipeline between the water inlet end of water-storing device 1 and control valve 5
21, make there are a set of closed circuit in flowmeter calibrating installation, and then liquid is flowed in the closed circuit, complete liquid
The flow circuit of body；In addition, standard scale calibrating installation 17 is in parallel with water return pipeline 21, mark can calibrated using weight method
In the case of quasi- flowmeter 3, replace water return pipeline 21 to form closed circuit using standard scale calibrating installation 17, complete liquid
Flow circuit.
In a schematical embodiment, standard scale calibrating installation 17 includes gravimetric tank 7, for being weighed according to inflow
At least one proving flowmeter 3 of mass calibration of the liquid of tank 7.
According to the above embodiment, the liquid of inflow can be measured according to the gravimetric tank 7 in standard scale calibrating installation 17
Quality calibrates at least one proving flowmeter 3, so that proving flowmeter 3 can be stablized, accurately measure small moving liquid
Flow velocity signal, improve the stability of small flow velocity calibration.
In an exemplary embodiment of present embodiment, gravimetric tank 7 is connected with water-storing device 1 by discharge pipe line
Connect, wherein, drain valve 8 is provided with discharge pipe line, can be by the liquid in gravimetric tank 7 in the case where the drain valve 8 is opened
Body is drained into water-storing device 1.
In a schematical embodiment, standard scale calibrating installation 17 further includes steering gear 6, installed in gravimetric tank 7
Water inlet, for control liquid whether via gravimetric tank 7 flow into water-storing device 1.
According to the above embodiment, steering gear 6 is installed on to the water inlet of gravimetric tank 7, can be controlled by steering gear 6
Whether liquid processed controls weight in liquid inflow gravimetric tank 7 via the inflow water-storing device 1 of gravimetric tank 7.
In a schematical embodiment, flowmeter calibrating installation further includes two conversion valves 9 and 9 ', pacifies respectively
It is electrically connected mounted in the water inlet of water return pipeline 21 and gravimetric tank 7, and with the first NI communicators 10, for communicating in the first NI
The switching of liquid flow direction is carried out under the control of device 10 between standard scale calibrating installation 17 and water return pipeline 21.
According to the above embodiment, by two conversion valves 9 and 9 ', water return pipeline 21 and gravimetric tank 7 are separately mounted to
Water inlet, and two conversion valves 9 and 9 ' are established with the first NI communicators 10 and are electrically connected, it can be communicated by the first NI
Device 10 realizes the selection to liquid inflow water return pipeline 21 and gravimetric tank 7 to the control of conversion valve 9 and 9 ', enables liquid
Enough switchings for carrying out liquid flow direction between standard scale calibrating installation 17 and water return pipeline 21 according to actual use demand, i.e., in school
Switched in two circuits of the quasi- meter flow-meter of fiducial mark and the tested flowmeter of calibration.
For example, in the case where needing to flow liquid into standard scale calibrating installation 17, can control installed in water return pipeline
The conversion valve 9 of 21 inlet is closed, and control is opened installed in the conversion valve 9 ' of the water inlet of gravimetric tank 7；Needing
In the case of flowing liquid into water return pipeline 21, the conversion valve 9 installed in the inlet of water return pipeline 21 can be controlled to open,
Control is closed installed in the conversion valve 9 ' of the water inlet of gravimetric tank 7.
In an exemplary embodiment of present embodiment, server 13 is established with the first NI communicators 10 and is electrically connected
Connect, the unlatching and pass of two conversion valves 9,9 ' of control can be issued an instruction to the first NI communicators 10 by server 13
Close.
In an exemplary embodiment of present embodiment, DN200 standard scales pipeline 14 and DN50 standard scale pipelines
18 are connected in parallel；Standard scale calibrating installation 17 is connected in parallel with water return pipeline 21, so as to form parallel system.In the system
In, every standard scale pipeline all must necessarily be located a complete path, independently operable without influencing each other；Every standard scale
Pipeline all forms an independent circuit, and every standard scale pipeline is controlled by the control system in server 13, in this way, any one
The calibration process of bar pipeline will not be affected because of the mistake that other pipelines produce.The control system for operating in server 13 is led to
It is often the program of real time execution, comprising control logic and various real-time Communication for Power devices, therefore 13 internal memory performance of server and storage
Performance is required for being configured to be adapted with control system.Such system composition ensure that the response time energy of every pipeline control
Access guarantee, it is often more important that carried out for the flowmeter calibrating installation in parallel that multi-line forms higher, automation
Unified management provides condition.
It these are only the illustrative embodiments of the utility model, be not intended to limit the present invention, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on, should be included within the scope of protection of this utility model.
Claims (10)
1. flowmeter calibrating installation, it is characterised in that including：
One the oneth NI communicators (10), one the 2nd NI communicators (11), a server (13), a main line (19) and
A water-storing device (1), a water pump (2), the DN50 standard scales pipeline (18) being sequentially arranged on the main line (19), are detected
Flowmeter (4) can be installed on the main line (19)；
Wherein,
The water intake end of the main line (19) is connected to the water outlet end of the water-storing device (1), and the main line (19) is returned
Water end (W.E.) is connected to the water inlet end of the water-storing device (1)；
The first NI communicators (10) are electrically connected with the water pump (2), for controlling the water pump (2) to be stored in adjust
Liquid in the water-storing device (1) flows into the stream of the main line (19) from the water outlet end of the water-storing device (1)
Speed；
The DN50 standard scales pipeline (18) includes at least one proving flowmeter (3), at least one proving flowmeter (3)
For DN50 proving flowmeters, in the case of being 4 to 40 cubes ms/h in the flow velocity, detection flows through the DN50 marks
The flow velocity signal of the liquid of quasi- table pipeline (18)；
The 2nd NI communicators (11) are electrically connected with least one proving flowmeter (3), for from described at least one
A proving flowmeter (3) gathers the flow velocity signal；And
The server (13) is electrically connected with the 2nd NI communicators (11), for according to flow velocity signal calibration
Tested flowmeter (4).
2. flowmeter calibrating installation according to claim 1, it is characterised in that the DN50 standard scales pipeline (18) is also wrapped
Two butterfly valves (15,16) being installed in series at the both ends of at least one proving flowmeter (3) are included, for enabling or closing institute
State DN50 standard scales pipeline (18).
3. flowmeter calibrating installation according to claim 2, it is characterised in that further include：3rd NI communicators (12),
It is electrically connected with the butterfly valve (15,16), in the case of being 4 to 40 cubes ms/h in the flow velocity, controls the butterfly valve
(15,16) enable the DN50 standard scales pipeline (18) so that the liquid flows through the DN50 standard scales pipeline (18), otherwise,
Control the butterfly valve (15,16) to close the DN50 standard scales pipeline (18) and flow through the DN50 standard scales to avoid the liquid
Pipeline (18).
4. flowmeter calibrating installation according to any one of claim 1 to 3, it is characterised in that
At least one proving flowmeter (3) includes two proving flowmeters (3) being installed in series, each proving flowmeter
(3) flow velocity signal is all exported respectively；And
The flow velocity signal that the server (13) exports described two proving flowmeters (3) being installed in series respectively asks flat
Average, and flowmeter (4) is detected according to the average value calibration of the flow velocity signal.
5. flowmeter calibrating installation according to claim 4, it is characterised in that further include at least one DN200 standard scales
Pipeline (14), after at least one DN200 standard scales pipeline (14) is connected in parallel with the DN50 standard scales pipeline (18)
It is connected on the main line (19), in the case of being more than 40 cubes ms/h in the flow velocity, detects described in flowing through extremely
The average value of the flow velocity signal of a few DN200 standard scales pipeline (14) is for the calibration tested flowmeter (4).
6. flowmeter calibrating installation according to any one of claim 1 to 3, it is characterised in that the flow meter calibrating
Device further includes a control valve (5), and the control valve (5) is installed in series on the main line (19), and is located at the water storage
Between the water inlet end of device (1) and the tested flowmeter (4), and it is electrically connected with the first NI communicators (10)
Connect, the control valve (5) is used for the liquid that the main line (19) are adjusted under the control of the first NI communicators (10)
Pressure.
7. flowmeter calibrating installation according to claim 6, it is characterised in that
The main line (19) is included between the water inlet end of the water-storing device (1) and the control valve (5)
Water return pipeline (21)；
The flowmeter calibrating installation further includes standard scale calibrating installation (17), is connected to the control valve (5) and the water storage
Between device (1), and it is in parallel with the water return pipeline (21), for calibrating at least one normal flow according to weight method
Count (3).
8. flowmeter calibrating installation according to claim 7, it is characterised in that the standard scale calibrating installation (17) includes
Gravimetric tank (7), at least one proving flowmeter described in the mass calibration according to the liquid for flowing into the gravimetric tank (7)
(3)。
9. flowmeter calibrating installation according to claim 8, it is characterised in that the standard scale calibrating installation (17) is also wrapped
Include steering gear (6), the water inlet installed in the gravimetric tank (7), for whether controlling the liquid via the gravimetric tank
(7) water-storing device (1) is flowed into.
10. flowmeter calibrating installation according to claim 8 or claim 9, it is characterised in that further include two conversion valves (9,
9 '), it is separately mounted in the water inlet and the water return pipeline (21) of the gravimetric tank (7), and communicates with the first NI
Device (10) is electrically connected, under the control of the first NI communicators (10) in the standard scale calibrating installation (17) and
The switching of the liquid flow direction is carried out between the water return pipeline (21).
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| CN201721420724.7U CN207317905U (en) | 2017-10-30 | 2017-10-30 | Flowmeter calibrating installation |
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| CN201721420724.7U CN207317905U (en) | 2017-10-30 | 2017-10-30 | Flowmeter calibrating installation |
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| CN207317905U true CN207317905U (en) | 2018-05-04 |
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| CN109116819A (en) * | 2018-08-09 | 2019-01-01 | 安徽省法米特物联技术有限公司 | A kind of Internet of Things big data acquisition processing system |
| CN109143996A (en) * | 2018-08-09 | 2019-01-04 | 安徽省法米特物联技术有限公司 | A kind of Internet of Things big data acquisition processing system that can ensure product quality |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109116819A (en) * | 2018-08-09 | 2019-01-01 | 安徽省法米特物联技术有限公司 | A kind of Internet of Things big data acquisition processing system |
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